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Posted to issues@kylin.apache.org by "zhengdong (JIRA)" <ji...@apache.org> on 2016/11/23 08:30:59 UTC

[jira] [Updated] (KYLIN-2212) 'NOT' operator in filter on derived column may get incorrect result

     [ https://issues.apache.org/jira/browse/KYLIN-2212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

zhengdong updated KYLIN-2212:
-----------------------------
    Attachment: 0001-KYLIN-2212-NOT-operator-in-filter-on-derived-column-.patch

> 'NOT' operator in filter on derived column may get incorrect result 
> --------------------------------------------------------------------
>
>                 Key: KYLIN-2212
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2212
>             Project: Kylin
>          Issue Type: Bug
>    Affects Versions: v1.5.3, v1.5.4.1
>            Reporter: zhengdong
>            Assignee: zhengdong
>         Attachments: 0001-KYLIN-2212-NOT-operator-in-filter-on-derived-column-.patch
>
>
> when a compare filter on derived column specified in where clause, it will be translated into a filter on PK, and further converted to a range filter on PK ( GT the min, LT the max) if  the PK values' s size  larger than the threshold. 
> However, this loose filter may filter more records out than needed when decorated with 'NOT' operator 



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